Business machine



Nov. 16, 194s. R. w. PITMAN 2,453,932

BUSINESS MACHINE Original Filed Nov. 21, 1941 19 Sheets-Sheet 1 Y INVENTOR R/CHAAD M P/T/VAN Nov. 16, 1948. R. w. PITMAN 2,453,932

BUSINESS MACHINE Originall Filed Nov. 21. 1941 19 Sheets-Sheet 2 ATTORN EY Nov. 16,- 1948. R. w. PlTMAN BUsiNEss MACHINE oiginal Filed Nov. 21, 1941 19 Sheets-Sheet?. 3

INVENTOR A R/C//ARD h/. /MA/V 5"" 'SY/Cf A TORNEY Nov. 16, 1948. R. w. PITMAN BUSINESS MACHINE 19 Sheets-Sheet 4 INVENTOR AUCH/4R0 IM p/M/V ATTORNE Original Filed Nov. 21. 1941 Nov. 16, 1948. R. w. PITMAN 2,453,932

BUSINESS; MACHINE Original Filed Nov. 2l, 1941 19 Sheets-Sheet 5 ATTO R N EY Nov. 16, 1948. R W, pl-rMAN l2,453,932

BUSINESS MACHINE Original Filed Nov. 2l, 1941 19 Sheets-Sheet G INVENTOR IiP/HARD k/.p/T/VA/V A-rTos-QNEY v Nov. 16, 1948. l R. w. PITMAN 2,453,932

BUSINES S MACHINE 19 Sheets-Sheet 7 Original Filed Nov. 21. 1941 BY f ATTORNEY ANOV. 16, 1948. R P11-MAN BUSINESS MACHINE 19 Sheets-Sheet 8 Original Filed Nov. 21, 1941 ATTORNEY Nov. 16, 1948. R. w. MTMAN- 2,453,932

BUSINESS MACHINE Original Filed Nov. 2l.- 1941 19 Sheets-Sheet 9 INVENTOR AATTORNEY BUSINESS MACHINE Original Filed Nov. 2l, 1941 19 Sheets-Sheet ,10v

vACJOKJ NTS RECEIVABLE Tim DA1-z nzscmP-nou usan macon' BALANc;

5690 14 12-16 12a 62 5515 7a* 5513 1s 1- 4 a9 41 5724 55a 5124 as 2-15 7281 e7 um su um s?. s- 1 2575 o0 1 017 m 3.,. 'non 4s a-is l 511s e5 A was 51* w56 51\ 4- 1 Y 9902 7s ,nos sa* '-'-1 f2 1 @3125 lie@ i l) f d INVENTOR a? maf/Aka M /rMA/V 'BY/CM? ATTORNEY Nov. 16, 1948. R. w. PITMAN 2,453,932

BUSINESS MACHINE Original Filed Nov. 21, 1941 19 Sheets-Sheet 11 Nov. 16, 1948. R. w. PITMAN BUSINESS MACHINE original Filed Nov. 21, i941 19 Sheets-Sheet l2 SDI NNN M ,A m W m n @wif/hw M M m ATTORNEY Nov.l 16, 1948. R. w. PITMAN BUSINESS MACHINE 19 Sheets-Sheet 13 Original Filed Nov. 21, 1941 v R. W PITMAN BUSINESS MACHINE Nov. 16, 1948.

19 Sheets-Sheet 14 Original Filed Nov. 21, 1941 Nov. 16, 1948. R. w. PITMAN BUSINESS MACHINE 19 Shets-Sheet l5 Original Filed Nov. 21, 1941 ATTORNEY Nov. 16, 1948. R. w. PITMAN 2,453,932

BUSINESS MACHINE Original Filed Nov. 21, 1941 19 Sheets-Sheet 16 INVENTOR R/CHAAO hf. P/T/VA/V A ORNEY NOV. 16, 1948. R, w, PITMAN 2,453,932

BUSINESS MACHINE Original Filed Nov. 21, -1941 19 Sheets-Sheet 17 ATTORNEY NOV. 16, 1948. R, w, P11-MAN 'l 2,453,932

BUSINESS MACHINE Original Filed Nov. 21,k 1941 I 19 Sheets-Sheet 18 INVENTOR BY/C ATTORNEY Nov. 16, `1948. R W. PITMAN l 2,453,932

BUSINESS MACHINE origina Filed Nov. 21, 1941 19 sheets-sheet 19 v v ATTORNEY Patented Nov. 16, 1948 STA-rt: s PATENT# oFF-rca;

BUSINESS MACHINE Richard W: Pitman, Laverock-Hillcrest, Pa., as-

signor to Underwood Corporation, a corporation of Delaware Original. application November 21, 19.41 Serial;

No. 419,889. Dividedand this application-Feb-Y ruary, 1944,.Seral No. 520,983.

which-may be read or'sensed byfsensing means; it..

deals with sensing means; and it' also deals with meansicooperative with `thevsensing means for entering=the ba1ancef-=in1amegisterfinto which anyv transaction against the balance is also entered.

'I'heregister therefore willicontaina new balance which in 'turn maybe `recorded ,on the ledger sheet by saidfrecording means-andilater picked upsand reentered in the register-:infrespect'r to :further transactions.

A :typewriterf mechanism is lpreferably used in order to provide for simpleselective operation of thesnecessary types:` Another advantage of using typewriter mechanism isthatin .accordance `With its typing one character at a time, there may -be simplificationf of the.- recordingrmeans --and the sensing-means in that these may alsofunction for one character ata time. in.-.co.or,dination,with the stepfby-step feeding movementsof` the typing. carriage.

It is therefore `one object ofthe inventionto deal ,witharcombined ,typewriting and computing machine..

The invention is herein, shownV as applied 'to a combined typewriting and ,computing .machine of the Underwood-Hansonclass' exelnpliiie'dA in HT L'. Pitman PatentNol 2,160,487; dated'May 30, 1939, andHIL. Pitman Patent No. 2,192,355, dated March 5,1940.'

The claims of 'this divisional application are mainly on the recording and sensing features in relation to typewriter mechanismv alone. Another Idivisional""application, Serial No. 533,220, filed April 28, 1944,- now -Patent- No; 2,425,490, contains `claims `relating-mainly to the recording means.' Another mdivisional application, Serial No. 524,1991/2, filed February 28, 1944; now-Patent No."2,'429,'730,' vcontains kclaims lrelating 'mainly to the 'sensing 'mechanisms My copending application Serial No. 102,389, l'e'dSeptember 24', 1935; now- Patent N'o. 2,278,118, alsoV concernspacombined 'typewriting and computing machlneaclapted'for automatically picking-updand reenteringiold balances, and the pres-` entdisclosure concerns novel and important4 features of improvement.

A present improvement'lies inproviding means for: treating overdraft "ors negative` balances well' as positive balances.

Each numeral of a balance is representedby `a distinctive perforation; in' the ledge1;'sheet;based" i on a combinationscheme so :that in any 'casethe perforation4 will" be 'within' a-l small areav of "the sheet.

Anotherv Vimprovement lies `inthe;-combination scheme of perforations inthattheareas of per= foration for successivecharacters vmay herex- `pandedV to providefor spreading-the'individual perforations representinga character.v This-com duces to reliable operation'of-thesensing means;

Another improvementv lies'in disposing thel per= forations inthe ledger sheet wellto one sideuof the corresponding typing 'of the balances insteady of having the typing and'perfo'rationsinterspersed i' vertically. One resulting ladvantage-is that-'the punching and Ysensing means may be disposed so asf not to obstructvisibility`1 ofv the Anew iba-lanceO 1 on the ledger sheet while' such :new balance is being typed. Another-advantage fisthatdisposi tion of the punching-.and sensing mechanism rela-Y tivelyto .other parts; olfthezfmachinecmayf be:v

facilitated..

Another improvementliesxin .providingrfor ine dexing the ledger sheet in' respect, tofanaoverdraftbalance in-order tovdistinguishthe latter from-:an positive Ibalance Specifically, a-f-new overdraft'. balance may be. codally represented ,onth'e ledger sheet accordingv` to thefrcomplement yof therftrue overdraft.

However, the trueV overdraft may -be Y typed onthe. ledger sheet .in conjunctionwithY entering the complementaltcodalrepresentations,-

onsaid sheet. ThisinVol-ves-the useof a shift mechanism, ,to determine .that `the typing mecha.-

nism will be actuated according. `to the true'overdraft instead of. according. to the. complement..

In entering complemental codalrepresentations on the ledger sheet, a distinguishing representationis also made onthe ledger sheet. Thisdis.n

tingushing representation may be in the Vforrnofl an extra perforation disposed in conjunction with the perforations that represent the complement may determine retyping .of the true overdraftv when its complement is'reentered in the register under control of the complemental ledger. sheet, perforations. 

